ASTROSAT CZTI

Data Quality Report

Orbit 36711

Creation date: 2024-06-27T21:30:37.667790
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T09_9000005236_36711cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36711cztM0_level2_quad_clean.evt
Size (bytes)376,692,48095,411,520
Size359.2 MB 91.0 MB
Events in quadrant A2,444,205654,371
Events in quadrant B2,732,266659,371
Events in quadrant C3,194,043624,565
Events in quadrant D2,705,635608,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102363
B0112022
C0124462
D0113892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487670.143560%
B4876711.456112%
C48762104.306809%
D4877831.701866%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7029 4877 0 0 0.00% 0.00%
B 7029 4877 45 45 0.64% 0.92%
C 7029 4877 183 183 2.60% 3.75%
D 7030 4878 75 75 1.07% 1.54%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 205046 1784.6 570 560 114.6
A 9 143 15331 128.91 570 560 114.6
A 13 254 8176 66.47 570 560 114.6
B 5 255 299563 2836.82 560 546 105.4
B 0 221 126780 1197.6 560 546 105.4
B 0 189 22811 211.23 560 546 105.4
C 0 10 459825 3743.54 531 534 122.7
C 14 254 435336 3543.93 531 534 122.7
C 15 214 222819 1811.78 531 534 122.7
D 13 249 159243 1194.01 544 527 132.9
D 12 233 108365 811.26 544 527 132.9
D 13 171 83468 623.96 544 527 132.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter